Method for producing multi-concentration oxygen-enriched gas by pressure swing adsorption without reversing valve
An oxygen-enriched gas and pressure swing adsorption technology, which is applied in the direction of oxygen preparation, separation methods, chemical instruments and methods, etc., can solve the problem of high reversing frequency of reversing valves, and achieve the effect of reducing investment costs and reducing losses
Active Publication Date: 2016-03-02
广西新宇瑞霖医疗科技股份有限公司
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[0002] The vacuum pressure swing adsorption separation technology used to produce oxygen-enriched gas is very mature, but this technology has a disadvantage, that is, it requires multiple reversing valves, and the reversing frequency of the reversing valves is very high, basically Reversing once every ten seconds, for such high-frequency reversing work, there is no domestic manufacturer that can produce high-quality reversing valves, even foreign reversing valves will inevitably have frequent problems, that is to say, the vacuum variable The weak point of pressure adsorption separation technology is the reversing valve. This invention uses Wei Boqing's invention patent "201410193438.6 Separation Drum in Vacuum Pressure Swing Adsorption Separator" to design and produce various concentrations of oxygen-enriched gas.
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[0020] exist figure 1 In the embodiment shown in -4: the method for producing multi-concentration oxygen-enriched gas by pressure swing adsorption without reversing valve, comprising adding a compressor 32 to the air inlet pipe 1 of the separation drum in the vacuum pressure swing adsorption separator , add a vacuum pump 34 to the nitrogen-enriched exhaust pipe 13, utilize a control computer 35, through the control module 33, control the compressor 32 speed, and the start and stop of the compressor 32 and the vacuum pump 34, and be controlled by the control module 33 The rotation speed of the motor 7 is to control the rotation speed of the molecular sieve cylinder 5, thereby controlling the molecular sieve adsorption and analysis time of nitrogen in the molecular sieve cylinder 5, and finally controlling the concentration and flow of the oxygen-enriched gas discharged from the oxygen-enriched exhaust pipe 11; Features:
[0021] 1. Determine the concentration and flow rate of ...
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Abstract
The invention relates to a method for producing multi-concentration oxygen-rich gas by pressure swing adsorption without a reversing valve. A compressor is increased in an air inlet pipe of a separating rotary drum in a vacuum pressure swing adsorption separator, a vacuum pump is increased in a nitrogen-rich exhaust pipe, a computer is utilized, the rotational speed of the compressor and the start and stop of the compressor and the vacuum pump are controlled through a control module and the rotational speed of a motor is controlled by the control module so as to control the rotational speed of a molecular sieve cylinder, further control the time of adsorbing and resolving nitrogen of a molecular sieve in the molecular sieve cylinder and finally control the concentration and the flow rate of the oxygen-rich gas exhausted from an oxygen-rich exhaust pipe. The method is characterized in that the decision of the concentration and the flow rate of the oxygen-rich gas exhausted from the oxygen-rich exhaust pipe is related with the rotational speed of the compressor, the rotational speed of the molecular sieve cylinder and the filling density of the molecular sieve.
Description
technical field [0001] The invention relates to a method for producing multi-concentration oxygen-enriched gas by pressure swing adsorption without a reversing valve, which is applicable to all vacuum pressure swing adsorption separation systems and belongs to the technical field of gas separation. Background technique [0002] The vacuum pressure swing adsorption separation technology used to produce oxygen-enriched gas is very mature, but this technology has a disadvantage, that is, it requires multiple reversing valves, and the reversing frequency of the reversing valves is very high, basically Reversing once every ten seconds, for such high-frequency reversing work, no domestic manufacturer can produce high-quality reversing valves, even foreign reversing valves will inevitably have frequent problems, that is to say, the vacuum variable The weak point of pressure adsorption separation technology is the reversing valve. This invention uses Wei Boqing's invention patent "2...
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IPC IPC(8): C01B13/02B01D53/047
Inventor 魏伯卿
Owner 广西新宇瑞霖医疗科技股份有限公司